The Plant Pal Singing Bird Moisture Meter from Mark Feldstein & Associates Inc. is a great gardening tool to assist your customers in the care and healthful growth of both indoor and outdoor potted plants. Plant Pal accurately measures moisture at the root level to help prevent under- or over-watering. An electronic sensor housed inside the lifelike, hand-painted polyresin songbird monitors moisture levels, and softly chirps its own authentic bird song when the soil is too dry and your plant needs watering. Simply position the Plant Pal’s 6-inch moisture-sensing probe into the soil and let the birdie do the rest.